Strap for Aviator 8 Chronograph 43 Stainless Steel / Black / Calf / Pin

The Breitling AVI A13316101B1X1 features a lug width of 23mm. This measurement, wider than the standard 20–22mm range, is a deliberate design choice rooted in the tradition of large aviation chronographs: broader lugs provide better weight distribution and superior stability on the wrist. When replacing the strap, only 23mm-width straps should be used.

The ideal choice depends on the intended use. For formal settings, a black or tobacco-brown polished alligator strap enhances the AVI's professional character. For everyday vintage aviation wear, vegetable-tanned calfskin develops an authentic patina over time. A nylon NATO strap remains the historical aeronautical reference. For sport use or humid conditions, vulcanised rubber is the most functional option.

Strap replacement is carried out via the springbars housed in the case lugs. Using a dedicated springbar tool (a forked lever screwdriver), compress both ends of the springbar to release it from the lug. Remove the old strap, position the new 23mm strap, and re-insert the springbar until it clicks securely into both lugs. The operation takes approximately two minutes and does not require a watchmaker.

Yes. Any strap with a 23mm attachment width is technically compatible with the Breitling AVI A13316101B1X1. Milano Straps offers a curated selection of handcrafted 23mm straps in leather, rubber and NATO nylon, made from premium materials with hand-stitched finishing. Casati Milano also produces bespoke straps for this reference, with full customisation of leather type, colour, stitching and buckle.

Lifespan depends primarily on leather quality, frequency of use and maintenance. A quality vegetable-tanned calfskin strap with moderate daily wear typically lasts between two and four years before showing signs of structural wear. Alligator leather, being denser and more resistant, can exceed five years when kept away from prolonged moisture and perspiration. Casati Milano straps carry an 18-month guarantee against manufacturing defects.